dify/api/extensions/ext_blueprints.py

from configs import dify_config
from constants import HEADER_NAME_APP_CODE, HEADER_NAME_CSRF_TOKEN, HEADER_NAME_PASSPORT
from dify_app import DifyApp

BASE_CORS_HEADERS: tuple[str, ...] = ("Content-Type", HEADER_NAME_APP_CODE, HEADER_NAME_PASSPORT)
SERVICE_API_HEADERS: tuple[str, ...] = (*BASE_CORS_HEADERS, "Authorization")
AUTHENTICATED_HEADERS: tuple[str, ...] = (*SERVICE_API_HEADERS, HEADER_NAME_CSRF_TOKEN)
FILES_HEADERS: tuple[str, ...] = (*BASE_CORS_HEADERS, HEADER_NAME_CSRF_TOKEN)


def init_app(app: DifyApp):
    # register blueprint routers

    from flask_cors import CORS

    from controllers.console import bp as console_app_bp
    from controllers.files import bp as files_bp
    from controllers.inner_api import bp as inner_api_bp
    from controllers.mcp import bp as mcp_bp
    from controllers.service_api import bp as service_api_bp
    from controllers.web import bp as web_bp

    CORS(
        service_api_bp,
        allow_headers=list(SERVICE_API_HEADERS),
        methods=["GET", "PUT", "POST", "DELETE", "OPTIONS", "PATCH"],
    )
    app.register_blueprint(service_api_bp)

    CORS(
        web_bp,
        resources={r"/*": {"origins": dify_config.WEB_API_CORS_ALLOW_ORIGINS}},
        supports_credentials=True,
        allow_headers=list(AUTHENTICATED_HEADERS),
        methods=["GET", "PUT", "POST", "DELETE", "OPTIONS", "PATCH"],
        expose_headers=["X-Version", "X-Env"],
    )
    app.register_blueprint(web_bp)

    CORS(
        console_app_bp,
        resources={r"/*": {"origins": dify_config.CONSOLE_CORS_ALLOW_ORIGINS}},
        supports_credentials=True,
        allow_headers=list(AUTHENTICATED_HEADERS),
        methods=["GET", "PUT", "POST", "DELETE", "OPTIONS", "PATCH"],
        expose_headers=["X-Version", "X-Env"],
    )
    app.register_blueprint(console_app_bp)

    CORS(
        files_bp,
        allow_headers=list(FILES_HEADERS),
        methods=["GET", "PUT", "POST", "DELETE", "OPTIONS", "PATCH"],
    )
    app.register_blueprint(files_bp)

    app.register_blueprint(inner_api_bp)
    app.register_blueprint(mcp_bp)